Based in Zurich, Switzerland, we specialize in fine vintage and antique jewelry, mostly from the Art Deco and Edwardian era. We are experts in Colored Gemstones jewelry, primarily with untreated rubies, sapphires and emeralds. Most of our items come with certificates from the world's most renowned laboratories, such as Gübelin or GIA.

Please note: the Stalwart Gem Laboratory, although not well known in the Western world, is a very reliable and trustworthy Burmese laboratory, recommended by the Burmese National Gem Museum. If you wish to have an additional Gübelin report for the rubies, please get in touch, we are happy to arrange the certification process for you.

1950 Platinum and Diamond Earrings / 6.20 cttw

The earrings are entirely made from platinum (tested in our atelier as platinum 950) and breathtaking examples of authentic post-war late Art Deco.

The 60 baguette cut diamonds (30 on each earring) have a total weight of approx. 4.0 carat. The 80 round brilliant cut diamonds (40 on each earring) have a total weight of approx. 2.20 carat. Total weight of all diamonds is approx. 6.20 carat. All diamonds, tested for authenticity, are of very good color and clarity.

This is a vintage item. Based on the materials and workmanship we would date it to around 1980, although the style of the piece is a clear reference to the art of jewelry around 1900. Apparently it is a fine copy of an earlier item, clearly from the hand of a master bench jeweler. All metal parts are solid, hand forged work, no casting or other mass production techniques involved. Please note the very fine, hand applied millegrain work to the edges of the gem settings.

Very good condition, only very slight wear to the metal work, consistent with age.

100% untreated (= not even oiled) emeralds are exceptionally rare. It is even rarer to have this condition certified by one of the most discriminating gem labs such as Gübelin of Switzerland. The Afghan origin of the emerald from the famous gem mines of the Panjshir Valley adds to its desirability. All that makes this little pendant a real treasure.

Please note: the pictured chain made from Platinum 950, approx. 16 in / 41 cm in length, is a fine but recent addition to the pendant and a FREE GIFT to the buyer.

Comes with a gem report issued by the renowned Gübelin laboratory (Lucerne, Switzerland) stating that the center sapphire is of Burma origin and free of any treatments (NTE).

The ring has been crafted from 950 platinum (tested in our atelier, stamped Pt950), very likely in Switzerland. It is a fine, hand-forged piece, not casted as customary with mass produced jewelry. Obviously from a master´s hand. Please note the very delicate metal work, especially in the under gallery and in the fine milgrain work on the bezel.

Although the design of the ring dates clearly from the Art Deco of the 1920s or early 1930, we think that the ring was made much later, around 1970. However, due to the very classical cutting style of the sapphire (very good hand cutting, no modern precision cut) we think it is possible that the sapphire was previously set in an early 20th century ring which, possibly as a consequence of wear and damage, has been replaced by a later setting.

Excellent condition of both gems and metal work, only slight traces of wear and patina on the platinum.

Currently approx. size 8 (US), P 1/2 (UK) or 57 (EU). Can be sized up and down a few steps, perhaps even quite a few – please inquire, our Swiss master goldsmith will take care of it. Weight of the ring is about 14 g.

Will do great as an extraordinary engagement ring or a most generous gift for any occasion.

Comes with a gem report issued by the reputable GCS laboratory (London, UK) stating that the center sapphire is of Ceylon origin and free of any treatments (NTE).

The ring shank is crafted from 9 carat (375, see picture of the later stamp) gold, the setting of the gems is made of 14 carat (585) gold (not stamped) – a combination of metals not unusual for the assumed period of manufacture. Both metals have been tested for authenticity in our atelier.

We are not entirely sure about the country of origin of this jewel, but see some strong evidence: on the outside of the shank the ring bears a “shamrock“ hallmark (see picture), used as an import mark for the city of Dublin (Ireland) between 1904–1906. Honestly, we do not know enough reference pieces with this hallmark to guarantee for the date and origin, but as it seems, the ring has been imported from another country – perhaps England – to Ireland in the aforementioned years.

There is some very slight wear to the sapphire and some traces of wear to the small colorless sapphires, but only to an extent that one might expect from a piece of jewelry more than 100 years old. All gems sit securely in their settings – every single prong has been carefully checked by our goldsmith.

Currently approx. size 8 1/2 (US), R (UK) or 57.5 (EU). Can be sized up and down a few steps, perhaps even quite a few – please inquire, our Swiss master goldsmith will take care of it.

Will do great as an extraordinary engagement ring (you know, Jenny McCarthy already has one...) or simply as a well deserved gift to yourself.

This is a vintage item. Based on the materials and workmanship we would date it to around 1975.

Heavily discounted. This is because we usually sell only entirely untreated colored gems. This one is treated with "heat only" (no filling of fissures, etc.), which is the mildest form of gem treatment. Hence, this is an extremely budget friendly occasion of getting an impressively sized natural ruby with full paperwork.

Please note: this listing is for the pendant only. Please write a message if you would like to add a matching 14K white gold chain.

Very fine workmanship. This pendant is without doubt a one of a kind, bench made masterpiece, crafted probably in Germany or Switzerland. Especially the fine “claw“ type prongs and the bezel of the diamond are extremely well made and will hold the gems securely for many more decades.

Heavily discounted. This is because we usually sell only entirely untreated colored gems. This one is heated and mildly clarity enhanced (please see Gübelin report). This is an extremely budget friendly occasion to own a really big natural Tanzanite with full paperwork, set in a gorgeous piece of vintage jewelry.

Due to its impressive size, this Tanzanite pendant is serious piece of statement jewelry. However, its timeless European elegance makes it suitable for daily wear.

Please note: this listing is for the pendant only. Please write a message if you would like to add a matching 18K or 14K white gold chain.

French Belle Epoque Platinum and Diamond brooch (1910)

The brooch is delicately crafted from platinum (tested in our atelier as minimum platinum 900, probably rather platinum 950) and a fine example of the artisanship of the French golden period of jewelry making.

The 27 old cut diamonds, all tested for authenticity, are ranging in size from approx. 2.5 mm to 4.5 mm in diameter and are of good color and clarity.

Very good condition – overall very light wear consistent with age. Only one slightly more prominent dent in the metal (see photo from the side) is adding to the historical charm of the brooch.

Size is approx. 10 cm / 3,9 inch in length, weight is 10 g.

Very suitable for daily wear. Looks just as great on the lapel of a blazer as on a little black dress.